Ornaments, weapons and aggressive behaviours may evolve in female animals by mate
choice and intrasexual competition for mating opportunities—the standard forms of sexual …

Darwin developed the theory of sexual selection to account for the evolution of weaponry,
ornamentation and other secondary sexual characters that are commonly more developed …

For sexual selection to act on a given sex, there must exist variation in the reproductive
success of that sex as a result of differential access to mates or fertilisations. The …

Evolutionary psychologists have proposed that preferences for facial characteristics, such as
symmetry, averageness, and sexual dimorphism, may reflect adaptations for mate choice …

Many conspicuous ornamental traits in animals are expressed in both males and females.
Despite this, most research has focused on sexually dimorphic ornamentation. Mutual …

The study of coloration in the polyphyletic reptilians has flourished in the last two decades, in
particular with respect to the underlying genetics of colour traits, the function of colours in …

It has been 25 years since the formalization of the Sensory Drive hypothesis was published
in the American Naturalist (1992). Since then, there has been an explosion of research …

Terrestrial habitats exhibit a variety of light environments. If species exhibit evolutionary
adaptations of their visual system or signals to habitat light conditions, then these conditions …

There has recently been an increase in interest in the notion that female ornamentation is
selected through male choice, rather than being an artefact of selection on male …

Tetrachromatic colour vision, based on four 'main'colours and their combinations, is
probably the original colour vision in terrestrial vertebrates. In addition to human visible …